Tag
Trigonometry
Entries tagged trigonometry.
2 entries
Concept
Dot product as alignment
The dot product of two vectors is a single number, equal to the product of their lengths and the cosine of the angle between them, that measures how much one points along the other.
7 min
ConceptSine, cosine, and tangent as geometric ratios
Sine, cosine, and tangent are ratios between the sides of a right triangle that depend only on one angle, never on the triangle's size, because similar triangles always share the same side ratios.
7 min